1) crossed circles
双交圆
2) two circular cylinders in cruciform arrangement
正交双圆柱
1.
The virtual boundary method is extended to three-dimensional application and used to simulate the flow passing around two circular cylinders in cruciform arrangement at Re = 150, and the flow field of two spheres in tandem arrangement at Re = 250.
把Goldstein等人提出的虚拟边界法推广到三维情况,研究了Re=150时不同间距下正交双圆柱绕流,和Re=250时不同间距下串列双圆球绕流流场。
3) two ellipsoid overlap method
双椭圆相交法
1.
To realize real time fault detection and diagnosis when multi sensors have faults simultaneously in the linear control system, a set of two ellipsoid confidence regions was constructed based on two ellipsoid overlap method.
以双椭圆相交法为基础构造一组双椭圆置信域 ,每个双椭圆置信域用来检测相应的传感器是否发生故障 。
4) flow around two circular cylinders in cruciform arrangement
垂直交叉双圆柱绕流
1.
Numerical simulations of flow around two circular cylinders in cruciform arrangement and vortex structures analysis;
垂直交叉双圆柱绕流数值模拟及涡结构分析
5) orthogonal cylinder-hyperboloid cylinder lens
正交圆柱面-双曲柱面平面透镜
6) orthogonal cylin-der-Hyperboloid cylinder lens
正交圆柱面一双曲柱面平面透镜
补充资料：双正交系
双正交系
biorthogona! system
双正交系{bi留山呢阅习s邓tem .6味甲r一-0姗-Ma飞 一付集合州r}和!乙}(/了)，其中{“1}是个(拓扑)向量空间X的元素集，毛迁是丫的(拓扑)对偶空间刃‘的儿素集，它们满足条树:~与:书、时 粼a;)二<若，。、>逻0，当t二s时，易(“)毖0‘这里火二、是藕合尤和灭‘的典范双线性型).例如.个双正交系可由一组阮hal乙日er基(s chauder basis)和义按它展开的系数所形成的集合来构成在一个有标量积、·，·、和基币。;的Hil-bert空间H中，满足条件 二氏的集合巨「:也是一组基，这甲当t二对付，众，二1，{含，笋、时，氏，二。这组基称为{a}的对偶(d喇)基、幸封月为H=H，，集合抽}和笼执形成仅正交系.特别是“中的基称为规范正交的(ortholun朋l)，如果它对偶于自身. 然而，也存在甚至不形成弱基的双正交系;一个例子是在赋以范数’一f一suPI八劝{的周期连续函数空间中的函数集。‘版，其中左任Z，、任R.
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条